Gwen bought 3 1/4 yards of fabric for $16.22. write and solve an equation to determine how much 12 yards would cost.

3x = 16.22

x = 16.22 ÷ 3 = 16.22 × = 4.9907 ≈ 5

x = 5

Verification: 3 × 5 = 16.25 ≈ 16.22

How much do 12 yards of fabric cost?

5 × 12 = $60

answer: ok

step-by-step explanation:

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2